PSYC 3031 Lecture Notes - Lecture 2: Kurtosis, Skewness, Descriptive Statistics
20 Jan 2017
School
Department
Course
Professor
Document Summary
Population group that your conclusions apply to. Sample group you study to estimate/generalize to your population. Polls today are more accurate than ever today, but other things intervene. For example, predicted hillary clinton would win and indeed based on popular vote they were incredibly accurate. But could not calculate the different seats won with as much accuracy because affected by many other variables: very difficult to get true random sample. Random assignment is critical, perhaps even more so given that we cannot really get random samples in psychological studies: means assignment ought to be truly random, not eenie-meenie-miny-mo style or may be due to confounding variables. 2 types, independent and dependent, defined arbitrarily in each experiment. Different in different disciplines: for example, in math the x-axis is the iv, the y-axis is dv always. In psych, iv is the explicit experimenter manipulation. Does not include gender, race, ethnic group, religion, language, etc.
